Central to the quest to "green" our information technology is finding the balance between low energy use and high performance. Better, probably, to say "appropriate" performance. A server, or a workstation for someone crunching a lot of data or doing a lot of graphical work--these should be machines up to the task. A workstation for someone doing basic office work like email, web browsing, word processing etc. doesn't have to be a top of the line system. The good news is that there are many ways to squeeze both noticeable energy savings and performance out of both types of systems.